67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
|
// +build example
|
||
|
|
//
|
||
|
|
// Do not build by default.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"gobot.io/x/gobot"
|
||
|
|
"gobot.io/x/gobot/drivers/spi"
|
||
|
|
"gobot.io/x/gobot/platforms/tinkerboard"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Wiring
|
||
|
|
// PWR Tinkerboard: 1 (+3.3V, VCC), 2(+5V), 6, 9, 14, 20 (GND)
|
||
|
|
// SPI0 Tinkerboard (not working with armbian): 11 (CLK), 13 (TXD), 15 (RXD), 29 (CSN0), 31 (CSN1, n.c.)
|
||
|
|
// SPI2 Tinkerboard: 23 (CLK), 19 (TXD), 21 (RXD), 24 (CSN0), 26 (CSN1, n.c.)
|
||
|
|
// MFRC522 plate: VCC, GND, SCK (CLK), MOSI (->TXD), MISO (->RXD), NSS/SDA (CSN0/CSN1?)
|
||
|
|
func main() {
|
||
|
|
a := tinkerboard.NewAdaptor()
|
||
|
|
d := spi.NewMFRC522Driver(a, spi.WithBusNumber(2))
|
||
|
|
|
||
|
|
wasCardDetected := false
|
||
|
|
const textToCard = "Hello RFID user!\nThis text was written to card."
|
||
|
|
|
||
|
|
work := func() {
|
||
|
|
if err := d.PrintReaderVersion(); err != nil {
|
||
|
|
fmt.Println("get version err:", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
gobot.Every(2*time.Second, func() {
|
||
|
|
if !wasCardDetected {
|
||
|
|
fmt.Println("\n+++ poll for card +++")
|
||
|
|
if err := d.IsCardPresent(); err != nil {
|
||
|
|
fmt.Println("no card found")
|
||
|
|
} else {
|
||
|
|
fmt.Println("\n+++ write card +++")
|
||
|
|
err := d.WriteText(textToCard)
|
||
|
|
if err != nil {
|
||
|
|
fmt.Println("write err:", err)
|
||
|
|
}
|
||
|
|
wasCardDetected = true
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
fmt.Println("\n+++ read card +++")
|
||
|
|
text, err := d.ReadText()
|
||
|
|
if err != nil {
|
||
|
|
fmt.Println("read err:", err)
|
||
|
|
wasCardDetected = false
|
||
|
|
} else {
|
||
|
|
fmt.Printf("-- start text --\n%s\n-- end text --\n", text)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
robot := gobot.NewRobot("spiBot",
|
||
|
|
[]gobot.Connection{a},
|
||
|
|
[]gobot.Device{d},
|
||
|
|
work,
|
||
|
|
)
|
||
|
|
|
||
|
|
robot.Start()
|
||
|
|
}
|